fix execute procedure for async exec
fix execute procedure for async exec

jacobalberty/node-firebird-libfbclient,jacobalberty/node-firebird-libfbclient,xdenser/node-firebird-libfbclient,agebrock/node-firebird-libfbclient,xdenser/node-firebird-libfbclient,jacobalberty/node-firebird-libfbclient,agebrock/node-firebird-libfbclient,jacobalberty/node-firebird-libfbclient,xdenser/node-firebird-libfbclient,xdenser/node-firebird-libfbclient,agebrock/node-firebird-libfbclient,agebrock/node-firebird-libfbclient